dimensions of solid cuboid are 4.4 M 2.6 M and 1 m is melted and recast into hollow cylinder pipe of inner radius 30 cm and Outer radius 35 cm find the length of the pipe
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Vol of cuboid =4.4×2.6×1=11.44meter cube=114400cm cube
Vol of hollow cylinder=11.44 as same vol of metal is used in cylinder that of cuboid
πR^2h-πr^2h=114400
πh(R^2-r^2)=114400
22/7×h(35×35-30×30)=114400
h =114400×7/22×325
h=112cm
Vol of hollow cylinder=11.44 as same vol of metal is used in cylinder that of cuboid
πR^2h-πr^2h=114400
πh(R^2-r^2)=114400
22/7×h(35×35-30×30)=114400
h =114400×7/22×325
h=112cm
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